Richard Harris
King Arthur

Vanessa Redgrave
Guenevere

Franco Nero
Lancelot Du Lac

David Hemmings
Mordred

Lionel Jeffries
King Pellinore

Laurence Naismith
Merlyn

Pierre Olaf
Dap

Estelle Winwood
Lady Clarinda

Gary Marshal
Sir Lionel

Anthony Rogers
Sir Dinadan

Peter Bromilow
Sir Sagramore

Sue Casey
Lady Sybil

Gary Marsh
Tom of Warwick

Nicolas Beauvy
King Arthur as a Boy

Fredric Abbott
Sir Geoffrey (uncredited)

Michael Kilgarriff
Sir Paul (uncredited)

Frank Baker
Priest (uncredited)

Buddy Bryan
Dancer (uncredited)

Lorinne Crawford
Dancer (uncredited)

Leon Greene
Sir Turloc (uncredited)